Vent-App/node_modules/echarts/lib/coord/axisHelper.js

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 * AUTO-GENERATED FILE. DO NOT MODIFY.
 */

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
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*   http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing,
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* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
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import * as zrUtil from 'zrender/lib/core/util.js';
import OrdinalScale from '../scale/Ordinal.js';
import IntervalScale from '../scale/Interval.js';
import Scale from '../scale/Scale.js';
import { prepareLayoutBarSeries, makeColumnLayout, retrieveColumnLayout } from '../layout/barGrid.js';
import BoundingRect from 'zrender/lib/core/BoundingRect.js';
import TimeScale from '../scale/Time.js';
import LogScale from '../scale/Log.js';
import { getStackedDimension } from '../data/helper/dataStackHelper.js';
import { ensureScaleRawExtentInfo } from './scaleRawExtentInfo.js';
/**
 * Get axis scale extent before niced.
 * Item of returned array can only be number (including Infinity and NaN).
 *
 * Caution:
 * Precondition of calling this method:
 * The scale extent has been initialized using series data extent via
 * `scale.setExtent` or `scale.unionExtentFromData`;
 */
export function getScaleExtent(scale, model) {
  var scaleType = scale.type;
  var rawExtentResult = ensureScaleRawExtentInfo(scale, model, scale.getExtent()).calculate();
  scale.setBlank(rawExtentResult.isBlank);
  var min = rawExtentResult.min;
  var max = rawExtentResult.max;
  // If bars are placed on a base axis of type time or interval account for axis boundary overflow and current axis
  // is base axis
  // FIXME
  // (1) Consider support value axis, where below zero and axis `onZero` should be handled properly.
  // (2) Refactor the logic with `barGrid`. Is it not need to `makeBarWidthAndOffsetInfo` twice with different extent?
  //     Should not depend on series type `bar`?
  // (3) Fix that might overlap when using dataZoom.
  // (4) Consider other chart types using `barGrid`?
  // See #6728, #4862, `test/bar-overflow-time-plot.html`
  var ecModel = model.ecModel;
  if (ecModel && scaleType === 'time' /* || scaleType === 'interval' */) {
    var barSeriesModels = prepareLayoutBarSeries('bar', ecModel);
    var isBaseAxisAndHasBarSeries_1 = false;
    zrUtil.each(barSeriesModels, function (seriesModel) {
      isBaseAxisAndHasBarSeries_1 = isBaseAxisAndHasBarSeries_1 || seriesModel.getBaseAxis() === model.axis;
    });
    if (isBaseAxisAndHasBarSeries_1) {
      // Calculate placement of bars on axis. TODO should be decoupled
      // with barLayout
      var barWidthAndOffset = makeColumnLayout(barSeriesModels);
      // Adjust axis min and max to account for overflow
      var adjustedScale = adjustScaleForOverflow(min, max, model, barWidthAndOffset);
      min = adjustedScale.min;
      max = adjustedScale.max;
    }
  }
  return {
    extent: [min, max],
    // "fix" means "fixed", the value should not be
    // changed in the subsequent steps.
    fixMin: rawExtentResult.minFixed,
    fixMax: rawExtentResult.maxFixed
  };
}
function adjustScaleForOverflow(min, max, model,
// Only support cartesian coord yet.
barWidthAndOffset) {
  // Get Axis Length
  var axisExtent = model.axis.getExtent();
  var axisLength = axisExtent[1] - axisExtent[0];
  // Get bars on current base axis and calculate min and max overflow
  var barsOnCurrentAxis = retrieveColumnLayout(barWidthAndOffset, model.axis);
  if (barsOnCurrentAxis === undefined) {
    return {
      min: min,
      max: max
    };
  }
  var minOverflow = Infinity;
  zrUtil.each(barsOnCurrentAxis, function (item) {
    minOverflow = Math.min(item.offset, minOverflow);
  });
  var maxOverflow = -Infinity;
  zrUtil.each(barsOnCurrentAxis, function (item) {
    maxOverflow = Math.max(item.offset + item.width, maxOverflow);
  });
  minOverflow = Math.abs(minOverflow);
  maxOverflow = Math.abs(maxOverflow);
  var totalOverFlow = minOverflow + maxOverflow;
  // Calculate required buffer based on old range and overflow
  var oldRange = max - min;
  var oldRangePercentOfNew = 1 - (minOverflow + maxOverflow) / axisLength;
  var overflowBuffer = oldRange / oldRangePercentOfNew - oldRange;
  max += overflowBuffer * (maxOverflow / totalOverFlow);
  min -= overflowBuffer * (minOverflow / totalOverFlow);
  return {
    min: min,
    max: max
  };
}
// Precondition of calling this method:
// The scale extent has been initialized using series data extent via
// `scale.setExtent` or `scale.unionExtentFromData`;
export function niceScaleExtent(scale, inModel) {
  var model = inModel;
  var extentInfo = getScaleExtent(scale, model);
  var extent = extentInfo.extent;
  var splitNumber = model.get('splitNumber');
  if (scale instanceof LogScale) {
    scale.base = model.get('logBase');
  }
  var scaleType = scale.type;
  var interval = model.get('interval');
  var isIntervalOrTime = scaleType === 'interval' || scaleType === 'time';
  scale.setExtent(extent[0], extent[1]);
  scale.calcNiceExtent({
    splitNumber: splitNumber,
    fixMin: extentInfo.fixMin,
    fixMax: extentInfo.fixMax,
    minInterval: isIntervalOrTime ? model.get('minInterval') : null,
    maxInterval: isIntervalOrTime ? model.get('maxInterval') : null
  });
  // If some one specified the min, max. And the default calculated interval
  // is not good enough. He can specify the interval. It is often appeared
  // in angle axis with angle 0 - 360. Interval calculated in interval scale is hard
  // to be 60.
  // FIXME
  if (interval != null) {
    scale.setInterval && scale.setInterval(interval);
  }
}
/**
 * @param axisType Default retrieve from model.type
 */
export function createScaleByModel(model, axisType) {
  axisType = axisType || model.get('type');
  if (axisType) {
    switch (axisType) {
      // Buildin scale
      case 'category':
        return new OrdinalScale({
          ordinalMeta: model.getOrdinalMeta ? model.getOrdinalMeta() : model.getCategories(),
          extent: [Infinity, -Infinity]
        });
      case 'time':
        return new TimeScale({
          locale: model.ecModel.getLocaleModel(),
          useUTC: model.ecModel.get('useUTC')
        });
      default:
        // case 'value'/'interval', 'log', or others.
        return new (Scale.getClass(axisType) || IntervalScale)();
    }
  }
}
/**
 * Check if the axis cross 0
 */
export function ifAxisCrossZero(axis) {
  var dataExtent = axis.scale.getExtent();
  var min = dataExtent[0];
  var max = dataExtent[1];
  return !(min > 0 && max > 0 || min < 0 && max < 0);
}
/**
 * @param axis
 * @return Label formatter function.
 *         param: {number} tickValue,
 *         param: {number} idx, the index in all ticks.
 *                         If category axis, this param is not required.
 *         return: {string} label string.
 */
export function makeLabelFormatter(axis) {
  var labelFormatter = axis.getLabelModel().get('formatter');
  var categoryTickStart = axis.type === 'category' ? axis.scale.getExtent()[0] : null;
  if (axis.scale.type === 'time') {
    return function (tpl) {
      return function (tick, idx) {
        return axis.scale.getFormattedLabel(tick, idx, tpl);
      };
    }(labelFormatter);
  } else if (zrUtil.isString(labelFormatter)) {
    return function (tpl) {
      return function (tick) {
        // For category axis, get raw value; for numeric axis,
        // get formatted label like '1,333,444'.
        var label = axis.scale.getLabel(tick);
        var text = tpl.replace('{value}', label != null ? label : '');
        return text;
      };
    }(labelFormatter);
  } else if (zrUtil.isFunction(labelFormatter)) {
    return function (cb) {
      return function (tick, idx) {
        // The original intention of `idx` is "the index of the tick in all ticks".
        // But the previous implementation of category axis do not consider the
        // `axisLabel.interval`, which cause that, for example, the `interval` is
        // `1`, then the ticks "name5", "name7", "name9" are displayed, where the
        // corresponding `idx` are `0`, `2`, `4`, but not `0`, `1`, `2`. So we keep
        // the definition here for back compatibility.
        if (categoryTickStart != null) {
          idx = tick.value - categoryTickStart;
        }
        return cb(getAxisRawValue(axis, tick), idx, tick.level != null ? {
          level: tick.level
        } : null);
      };
    }(labelFormatter);
  } else {
    return function (tick) {
      return axis.scale.getLabel(tick);
    };
  }
}
export function getAxisRawValue(axis, tick) {
  // In category axis with data zoom, tick is not the original
  // index of axis.data. So tick should not be exposed to user
  // in category axis.
  return axis.type === 'category' ? axis.scale.getLabel(tick) : tick.value;
}
/**
 * @param axis
 * @return Be null/undefined if no labels.
 */
export function estimateLabelUnionRect(axis) {
  var axisModel = axis.model;
  var scale = axis.scale;
  if (!axisModel.get(['axisLabel', 'show']) || scale.isBlank()) {
    return;
  }
  var realNumberScaleTicks;
  var tickCount;
  var categoryScaleExtent = scale.getExtent();
  // Optimize for large category data, avoid call `getTicks()`.
  if (scale instanceof OrdinalScale) {
    tickCount = scale.count();
  } else {
    realNumberScaleTicks = scale.getTicks();
    tickCount = realNumberScaleTicks.length;
  }
  var axisLabelModel = axis.getLabelModel();
  var labelFormatter = makeLabelFormatter(axis);
  var rect;
  var step = 1;
  // Simple optimization for large amount of labels
  if (tickCount > 40) {
    step = Math.ceil(tickCount / 40);
  }
  for (var i = 0; i < tickCount; i += step) {
    var tick = realNumberScaleTicks ? realNumberScaleTicks[i] : {
      value: categoryScaleExtent[0] + i
    };
    var label = labelFormatter(tick, i);
    var unrotatedSingleRect = axisLabelModel.getTextRect(label);
    var singleRect = rotateTextRect(unrotatedSingleRect, axisLabelModel.get('rotate') || 0);
    rect ? rect.union(singleRect) : rect = singleRect;
  }
  return rect;
}
function rotateTextRect(textRect, rotate) {
  var rotateRadians = rotate * Math.PI / 180;
  var beforeWidth = textRect.width;
  var beforeHeight = textRect.height;
  var afterWidth = beforeWidth * Math.abs(Math.cos(rotateRadians)) + Math.abs(beforeHeight * Math.sin(rotateRadians));
  var afterHeight = beforeWidth * Math.abs(Math.sin(rotateRadians)) + Math.abs(beforeHeight * Math.cos(rotateRadians));
  var rotatedRect = new BoundingRect(textRect.x, textRect.y, afterWidth, afterHeight);
  return rotatedRect;
}
/**
 * @param model axisLabelModel or axisTickModel
 * @return {number|String} Can be null|'auto'|number|function
 */
export function getOptionCategoryInterval(model) {
  var interval = model.get('interval');
  return interval == null ? 'auto' : interval;
}
/**
 * Set `categoryInterval` as 0 implicitly indicates that
 * show all labels regardless of overlap.
 * @param {Object} axis axisModel.axis
 */
export function shouldShowAllLabels(axis) {
  return axis.type === 'category' && getOptionCategoryInterval(axis.getLabelModel()) === 0;
}
export function getDataDimensionsOnAxis(data, axisDim) {
  // Remove duplicated dat dimensions caused by `getStackedDimension`.
  var dataDimMap = {};
  // Currently `mapDimensionsAll` will contain stack result dimension ('__\0ecstackresult').
  // PENDING: is it reasonable? Do we need to remove the original dim from "coord dim" since
  // there has been stacked result dim?
  zrUtil.each(data.mapDimensionsAll(axisDim), function (dataDim) {
    // For example, the extent of the original dimension
    // is [0.1, 0.5], the extent of the `stackResultDimension`
    // is [7, 9], the final extent should NOT include [0.1, 0.5],
    // because there is no graphic corresponding to [0.1, 0.5].
    // See the case in `test/area-stack.html` `main1`, where area line
    // stack needs `yAxis` not start from 0.
    dataDimMap[getStackedDimension(data, dataDim)] = true;
  });
  return zrUtil.keys(dataDimMap);
}
export function unionAxisExtentFromData(dataExtent, data, axisDim) {
  if (data) {
    zrUtil.each(getDataDimensionsOnAxis(data, axisDim), function (dim) {
      var seriesExtent = data.getApproximateExtent(dim);
      seriesExtent[0] < dataExtent[0] && (dataExtent[0] = seriesExtent[0]);
      seriesExtent[1] > dataExtent[1] && (dataExtent[1] = seriesExtent[1]);
    });
  }
}